多溴联苯醚在桂花鱼体内的分布  

Tissue Distribution of PBDEs in Mandarin Fish

作　　者：郭英[1] 唐洪磊[1] 孟祥周[1] 麦碧娴[1] 曾永平[1] 

机构地区：[1]中国科学院广州地球化学研究所有机地球化学国家重点实验室

出　　处：《环境科学》2007年第12期2806-2810,共5页Environmental Science

基　　金：国家自然科学基金项目(40532013);中国科学院'引进国外杰出人才计划'基金项目

摘　　要：使用GC-MS-NCI检测方法对持久性有机污染物多溴联苯醚（PBDEs）的同系物BDE28，47，66，85，99，100，138，153，154，183，209在桂花鱼体内的含量及分布进行了研究．结果表明，∑10PBDEs（不包括BDE209）在肾脏中含量最高，肌肉中含量最低，其干重平均值分别为5．71ng·g^-1和0．95ng·g^-1∑10PBDEs在肾脏、鱼鳔、肝脏、鱼鳃、生殖腺、鱼皮、肠胃和肌肉中的干重含量分别为3．04-12．8、0．81-6．90、1．28-8．87、0．09-6．36、1．05-5．73、0．022-5．06、0．69-5．98和0．14-2．61ng·g^-1．∑10PBDEs在各组织和器官的含量顺序为：肾脏、鱼鳔、肝脏〉鱼鳃、生殖腺〉肠胃、肌肉、鱼皮．桂花鱼体所含低溴取代PBDEs以BDE47为主要同系物，所占丰度为35．7％-65．6％．十溴取代物BDE209在所有样品中检出率为45．2％，其中在肾脏和生殖腺中含量较高．研究表明，PBDEs由摄食、呼吸2种主要途径进入桂花鱼体内，易富集在肝脏、鱼鳔、鱼鳃等脂肪含量较高的组织和器官中．Levels and distribution of polyborminated diphenyl ether （PBDE） congeners, including BDE28, 47, 66, 85, 99, 100, 138, 153, 154, 183,and 209 （sum of which except for BDE 209 is designated as 5＇.~0 PBDEs）, in Mandarin fish （Siniperca chuatsi） tissues were determined using the method of gas chromatography-mass spectrometry operating in the negative chemical ionization mode. The highest and lowest mean concentrations of ∑10 PBDEs were 5.71 ng·g^-1 and 0.95 ng·g^-1 （dry weight）, found in kidney and muscle tissue, respectively. The concentration ranges of ∑10 PBDEs in kidney, swimming bladder, liver, gills, gonad, gastrointestinal tract, skin, and muscle were 3.04 --12.8, 0.81--6.90, 1.28 -- 8.87, 0.09 --6.36, 1.05 --5.73, 0.022 --5.06, 0.69 -- 5.98, and 0.14-- 2.61 ng·g^-1（dry weight）, respectively. The tissue concentrations of ∑10 PBDEs followed the sequence of kidney, swimming bladder, liver 〉 gills, gonad 〉 stomach, skin, muscle. BDE47 was the predominant component among the low brominated PBDEs, accounting for 35.7% to 65.6% of ∑10 PBDEs. BDE209 was detected in 45.2% of the samples, and its levels were higher in kidney and gonad than in other organs. These results indicated that PDBEs were bioaccumulated in Mandarin fish from both feeding and gill inhalation, and they particularly preferred to concentrate in tissues with high lipid contents, such as liver, swimming bladder, and gills.

关 键 词：多溴联苯醚 桂花鱼 体分布 BDE209 

分 类 号：X171.5[环境科学与工程—环境科学]